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This article provides the information on "Precision Mobile Workstation M6600 Trusted Platform Module (TPM) error in device manager after applying custom image to the system causes no TPM found error enabling Bitlocker".

Bitlocker error and TPM (Bang) in Device Manager after image

System user was trying to install Bitlocker on a recently imaged Precision Mobile Workstation M6600 and it states that the need to upgrade the TPM version from 1.0 to 1.2. The user had gone to the Dell website and download the control vault driver and firmware but the issue persisted after the driver and firmware update.

Update Broadcom Trusted Platform Module in Device Manager

The Bitlocker issue was resolved by the execution of the following steps:

Open Device Manager, listed under the System Devices Category, right click on Broadcom TPM and select "Update driver Software".